Dr. Donald R. Hedeker, professor of biostatistics at the University of Illinois at Chicago School of Public Health, received notice of award for a four-year, NHLBI-funded grant to develop and test novel multilevel statistical methods to examine the effects of subject-level parameters (variance and slope) of time-varying variables in ecological momentary assessment (EMA) studies of physical activity. Low level of physical activity heightens the risk of numerous deadly diseases (e.g., heart disease, stroke, cancer, diabetes) throughout the life course. The use of EMA in physical activity research is growing rapidly because real-time data capture methods supply novel insights into determinants of this behavior. Dr. Hedeker’s co-principal investigator is Dr. Genevieve Dunton, assistant professor in the department of preventive medicine at University of Southern California.